浅埋深厚煤层枯水期水体下开采安全煤(岩)柱设计的探讨
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摘要
地表水及第四系含水层是浅埋煤层开采的重大安全隐患,本文以左权阜生煤业有限公司1102工作面为例,按裂缝角采用垂直剖面法进行了丰堠沟保护煤柱设计,以保障煤矿安全生产,降低开采沉陷对河道的损坏,减少雨季地表水入渗为主要目标,提出了1102工作面在枯水期进行保护煤柱内限厚开采,丰水期保护煤柱区域外按设计采高进行正常回采的水体下开采方案,研究成果可为浅埋厚煤层水体下开采技术研究提供参考。
Surface water and Quaternary aquifer were the major hidden dangers in shallow seam mining. Taking1102 working face in Zuoquan Fusheng Coal Industry Co.,Ltd. as an example,in this paper,protective coal pillars were designed using the vertical section method according to fracture angle in Fengcugou,aiming at ensuring coal mine safety production,reducing damage of mining subsidence to river course and reducing surface water infiltration in rainy season. In dry season,the working faces were exploited with the inner limit thickness of protective coal pillars,and in flood season,the mining scheme under water for normal mining outside the protective coal pillar area according to the designed mining height was carried out. The research results could provide a reference for the research of mining technology under water body in shallow and thick coal seams.
Surface water and Quaternary aquifer were the major hidden dangers in shallow seam mining. Taking1102 working face in Zuoquan Fusheng Coal Industry Co.,Ltd. as an example,in this paper,protective coal pillars were designed using the vertical section method according to fracture angle in Fengcugou,aiming at ensuring coal mine safety production,reducing damage of mining subsidence to river course and reducing surface water infiltration in rainy season. In dry season,the working faces were exploited with the inner limit thickness of protective coal pillars,and in flood season,the mining scheme under water for normal mining outside the protective coal pillar area according to the designed mining height was carried out. The research results could provide a reference for the research of mining technology under water body in shallow and thick coal seams.
引文
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[6]杨海鹏.村庄及水库保护煤柱设计[J].采矿技术,2018,18(6):63-64,94.
[7]孟照宏.关于煤矿矿井煤柱留设的几点探讨[J].技术与市场,2018,25(11):135-136.
[8]赵苑凯.水体下煤矿安全采煤技术的发展及展望[J].科技创业家,2013(16):82.
[2]杨健,张永国,陈存粮.老空水防隔水煤(岩)柱留设探讨[J].煤矿现代化,2015(4):114-116.
[3]贾旭琴.漳村煤矿防隔水煤柱设计计算[J].煤,2014(3):52-53,63.
[4]刘贵,张华兴,刘治国,等.河下综放开采覆岩破坏发育特征实测及模拟研究[J].煤炭学报,2013,38(6):987-993.
[5]程润明.某煤矿1303综放工作面开采覆岩破坏论证研究[J].能源技术与管理,2013,38(5):24-27.
[6]杨海鹏.村庄及水库保护煤柱设计[J].采矿技术,2018,18(6):63-64,94.
[7]孟照宏.关于煤矿矿井煤柱留设的几点探讨[J].技术与市场,2018,25(11):135-136.
[8]赵苑凯.水体下煤矿安全采煤技术的发展及展望[J].科技创业家,2013(16):82.